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罗红霉素分散片人体相对生物利用度研究
http://www.100md.com 《沈阳药科大学学报》 1999年第3期
     作者:来彩霞 陈 炜 王爱民 刘慧芝 王 宏 张成海

    单位:来彩霞 陈 炜 王爱民 刘慧芝:沈阳药科大学制药系, 沈阳 110015;沈阳市中心血站 王 宏 张成海:大连医药集团美罗药业公司, 大连 116021

    关键词:罗红霉素;分散片;生物利用度

    沈阳药科大学学报990301 摘 要 10名健康男性受试者,分别单次空腹口服国产罗红霉素分散片和国产片剂300 mg后,用不同时间血中罗红霉素的浓度绘制了血药浓度-时间曲线.结果表明:两种制剂中罗红霉素的药物动力学过程均符合二室模型,Cmax(7.02±1.73)μg/mL和(6.47±1.2)μg/mL,Tmax为(1.05±0.34)h和(1.50±0.41)h,t1/2(ke)为(15.85±2.12)h和(14.07±2.07)h,AUC0→∞为(68.7±14.3)μg/mL.h和(65.6±14.8)μg/mL.h.比较两种制剂动力学参数,两种制剂间罗红霉素的Cmax和AUC0→∞均无显著差异,P>0.05.罗红霉素分散片的平均相对生物利用率为(105.7±12.03)%,根据双单侧检验可以认为两种制剂在人体内具有生物等效性.
, http://www.100md.com
    分类号 R94

    A Study on Bioavilability of Roxithromycin Tablets and Roxithromycin Dispersive Tablets in Healthy Volunteers

    Lai Caixia,Chen Wei,Wang Aimin,Liu Huizhi,Wang Hong,Zhang Chenghai

    Department of Pharmac eutics,Shenyang Pharmaceutical University,Shenyang 110015

    Abstract To study the pharmacokinetics and relative bioavailability of roxithromycin tablets and roxithromycin dispersive tablets,the bioavailabilities of tablets were studied in 10 normal male volunteers.A 300 mg of roxithromycin dispersive tablet was given according to a crossover design.The concentrations in plasma were determined by microbilogical analysis.The concentration-time curves of roxithromycin tablets and roxithromycin dispersive tablets fitted to a two compartment open model.Tmax were(1.05±0.34)and(1.50±0.41)h;Cmax were(7.02±1.73)and(6.47±1.20)μg/mL;The AUC were(68.7±14.3) and (65.6±14.8)μg/mL.h respectively.The pharmacokinetics parameters obtained from our study showed no significant difference between the two products(P>0.05).The relative bioavailability of roxithromycin tablets to roxithromycin dispersive tablets were(105.7±12.03)%.According to the two one sided test,the two formulations were bioequivalent.
, 百拇医药
    Key words roxithromycin;dispersive tablets;bioavailability

    1 材料与方法

    1.1 受试者及给药方法

    10名健康男性志愿者,年龄为20~23岁,体重53~65 kg,签署知情同意书.试验前经全面体格检查均正常,受试前至少14天内停用一切药物,受试期间禁烟酒.按临床治疗时一天总剂量,分别一次口服罗红霉素分散片2片,或罗红霉素片2片.分散片临用前置温水中,呈混悬液后服用,罗红霉素片温水送服.

    1.2 药品及试剂

    罗红霉素分散片 沈阳华泰药物研究所,150 mg/片,批号:970906;罗红霉素片(欣美罗)大连医药集团大连美罗药业公司150 mg/片,批号:970518.
, 百拇医药
    1.3 样品采集与处理

    服药后0.33,0.67,1.0,1.5,3.0,4.0,6.0,8.0,12.0,24.0,36.0,48.0 h取静脉血3 mL,离心分离血清,存-20℃冰箱中保存待测.

    1.4 血清罗红霉素浓度测定

    1.4.1 仪器与试剂

    超净工作台,电热恒温培养箱,低温大容量冰箱,藤黄八叠球菌〔CMCC(B)28001〕,罗红霉素标准品,空白人血清.

    1.4.2 血清样品的分析方法

    标准血清样品配制范围0.212,0.424,0.600,0.848,1.696,3.392和6.784 μg/mL,其中0.424,1.696,3.392 μg/mL作为QC样品.
, 百拇医药
    双碟的制备 先用50℃的Ⅱ号培养基在碟底摊布冷凝为底层,每碟再加入5 mL含1%(V/V)试验菌悬液的Ⅱ号培养基,作为菌层.冷凝后用6.0 mm不锈钢小管等距离打孔,陶瓦盖覆盖备用.

    1.4.3 分析方法确证

    标准曲线的制备 以待测药物浓度的对数为横坐标,以抑菌圈直径为纵坐标,所得回归方程即为当日的标准曲线.本方法的线性范围为0.212~6.784 μg/mL,最低检测浓度为0.10 μg/mL.

    方法精确度与准确度 按“标准曲线的制备”项下方法配制高、中、低3个浓度(分别为0.424,1.696和3.392 μg/mL)的质量控制(QC)样品,双样本连续测定3天,并与标准曲线同时进行;计算QC样品的测得浓度,与配制浓度对照,结果表明,测定血清中的罗红霉素的分析方法符合有关规范要求,可用于该药物的人体生物利用度试验研究.
, 百拇医药
    2 结果与讨论

    未知血清样品测定按“血清样品的分析方法”项下操作,并以当日的标准曲线计算各时间点样品中罗红霉素的浓度,同时测定QC样品.如果发现受试者血清样品浓度超过线性范围上限,则将该样品用空白血清稀释一倍后复测.受试者口服被试制剂和对照制剂后的结果见表1和表2,再应用3P-87实用药物动力学计算软件,确定两种制剂的药物动力学模型,结果表明,两种制剂中罗红霉素药物动力学过程均符合二室模型.然后对主要药物动力学参数,进行统计分析和生物等效性评价.

    Tab.1 Concentration of Roxithromycin in plasma

    of 10 volunteers after po 300 mg Roxithromycin tablets/μg.mL-1,Test-formulation Subjects
, 百拇医药
    Time/h

    No

    0.00

    0.33

    0.67

    1.00

    1.50

    2.00

    3.00

    4.00

    6.00

    8.00

    12.00
, http://www.100md.com
    24.00

    36.00

    48.00

    A

    n d

    2.529

    5.135

    4.042

    3.224

    2.130

    1.918

    1.824

    1.355
, 百拇医药
    1.006

    0.723

    0.470

    0.290

    n d

    B

    n d

    1.081

    2.604

    7.341

    8.289

    8.083

    6.515
, http://www.100md.com
    4.145

    2.604

    2.365

    1.378

    1.085

    0.723

    n d

    C

    n d

    0.933

    3.812

    6.380

    6.247
, 百拇医药
    5.867

    4.250

    3.251

    1.615

    1.530

    0.990

    0.630

    0.401

    n d

    D

    n d

    3.447

    5.580
, http://www.100md.com
    5.567

    5.373

    4.699

    3.505

    2.604

    1.863

    1.549

    1.251

    0.813

    0.464

    n d

    E

    n d
, 百拇医药
    2.112

    6.515

    8.220

    9.243

    8.429

    5.328

    3.015

    1.950

    1.886

    1.35

    0.630

    0.381

    n d
, 百拇医药
    F

    n d

    2.301

    6.046

    9.848

    9.575

    7.924

    4.636

    4.175

    3.469

    2.202

    1.822

    1.320
, 百拇医药
    0.710

    n d

    G

    n d

    2.048

    4.075

    6.855

    7.137

    6.828

    5.147

    2.692

    2.166

    1.920
, 百拇医药
    1.437

    1.111

    0.458

    n d

    H

    n d

    3.359

    5.024

    4.944

    4.730

    3.791

    3.373

    2.883
, 百拇医药
    1.867

    1.736

    1.067

    0.658

    0.392

    n d

    I

    n d

    3.597

    5.445

    5.380

    5.337

    4.654
, 百拇医药
    4.142

    2.747

    2.210

    1.882

    1.364

    0.869

    0.460

    n d

    J

    n d

    4.339

    7.341

    7.798
, 百拇医药
    7.673

    6.397

    4.382

    3.946

    2.228

    1.943

    1.420

    1.004

    0.632

    n d

    Mean

    2.581

    5.159
, 百拇医药
    6.668

    6.683

    5.880

    4.320

    3.128

    2.133

    1.802

    1.281

    0.859

    0.491

    ±sd

    1.118

    1.382
, 百拇医药
    1.717

    2.060

    2.055

    1.247

    0.760

    0.584

    0.380

    0.289

    0.268

    0.147

    Tab.2 Concentration of Roxithromycin in plasma

    of 10 volunteers after po 300 mg Roxithromycin tablets/μg.mL-1,Reference formulation Subjects
, http://www.100md.com
    Time/h

    No

    0.00

    0.33

    0.67

    1.00

    1.50

    2.00

    3.00

    4.00

    6.00

    8.00

    12.00
, 百拇医药
    24.00

    36.00

    48.00

    A

    n d

    0.920

    2.670

    5.916

    5.284

    4.145

    3.292

    2.715

    2.077
, 百拇医药
    1.127

    0.873

    0.574

    0.291

    n d

    B

    n d

    1.028

    2.148

    4.880

    6.475

    7.434

    6.723
, 百拇医药
    4.145

    2.193

    1.870

    1.132

    0.880

    0.586

    n d

    C

    n d

    1.170

    2.670

    5.556

    7.011
, 百拇医药
    6.639

    5.396

    3.028

    1.779

    1.413

    1.099

    0.685

    0.35

    n d

    D

    n d

    2.184

    3.292
, 百拇医药
    4.545

    4.859

    4.621

    4.110

    3.491

    2.784

    2.148

    1.685

    1.081

    0.555

    n d

    E

    n d
, 百拇医药
    2.077

    3.812

    6.042

    7.372

    8.289

    7.687

    3.066

    2.456

    2.060

    1.498

    0.591

    0.414

    n d
, 百拇医药
    F

    n d

    2.758

    5.147

    7.673

    8.151

    7.893

    5.489

    3.946

    3.569

    3.150

    2.535

    1.478
, 百拇医药
    0.635

    n d

    G

    n d

    1.943

    2.628

    4.108

    5.467

    6.422

    6.119

    2.246

    2.031

    1.808
, http://www.100md.com
    1.551

    0.961

    0.309

    n d

    H

    n d

    1.539

    3.554

    5.489

    3.373

    2.692

    2.535

    2.377
, 百拇医药
    1.757

    1.408

    0.961

    0.635

    0.332

    n.d.

    I

    n d

    3.745

    4.865

    5.126

    5.024

    4.673
, 百拇医药
    3.930

    3.112

    1.882

    1.695

    1.408

    0.648

    0.449

    n d

    J

    n d

    3.414

    4.382

    5.273
, 百拇医药
    5.998

    5.831

    5.380

    4.192

    2.618

    2.283

    1.837

    0.831

    0.475

    n d

    Mean

    2.078

    3.517
, http://www.100md.com
    5.461

    5.901

    5.864

    5.066

    3.232

    2.315

    1.896

    1.458

    0.836

    0.448

    ±sd

    0.978

    1.025
, 百拇医药
    0.978

    1.399

    1.806

    1.594

    0.698

    0.562

    0.570

    0.493

    0.282

    0.114

    3 结果与讨论

    a.结果表明两种制剂间罗红霉素的Cmax和AUC0→∞间均无显著差异(P>0.05),罗红霉素分散片(被试制剂)的Tmax小于罗红霉素片剂(参比制剂)的Tmax(P<0.05);罗红霉素分散片的平均相对生物利用度(见表3~6)为(105.7±12.03)%,其生物利用度AUC参数平均值90%的可能性在参比制剂的98.7%~111.0%之间.据此可以认为两种制剂在人体内具有生物等效性.
, 百拇医药
    Tab.3 Comparative bioavailability study

    of Roxithromycin dispersive tablets Subjects

    No

    Reference

    formulation

    AUC0→∞/

    μg.mL-1.h-1

    Test formulation
, 百拇医药
    AUC0→∞/

    μg.mL-1.h-1

    Bioavailability/

    %

    A

    56.6

    47.2

    119.9

    B

    87.5

    74.0
, http://www.100md.com
    118.2

    C

    55.5

    59.0

    94.1

    D

    61.0

    72.6

    84.0

    E

    64.0

    66.4

    96.4
, 百拇医药
    F

    95.0

    97.0

    97.9

    G

    70.1

    63.3

    110.7

    H

    53.4

    45.7

    116.7

    I
, 百拇医药
    63.4

    59.3

    106.9

    J

    80.4

    71.8

    112.0

    mean

    68.69

    65.63

    105.7

    ±sd

    14.33
, 百拇医药
    14.79

    12.03

    Tab.4 ANOVA for the observed(AUC)

    of Roxithromycin tablets Source

    SS

    df

    MS

    F

    α=0.05

    Subject

    0.74

    9
, 百拇医药
    0.08

    16.12

    F(9,8)=3.40

    Formulation

    0.01

    1

    0.01

    2.40

    F(1,8)=5.32

    Period

    0.02

    1

    0.02
, 百拇医药
    4.23

    F(1,8)=5.32

    Error

    0.04

    8

    0.01

    Total

    0.81

    19

    Tab.5 ANOVA for the observed(Cmax)

    of Roxithromycin tablets Source
, http://www.100md.com
    SS

    df

    MS

    F

    α=0.05

    Subject

    0.77

    9

    0.09

    8.89

    F(9,8)=3.40

    Formulation

    0.02
, 百拇医药
    1

    0.02

    2.57

    F(1,8)=5.32

    Period

    0.01

    1

    0.01

    0.66

    F(1,8)=5.23

    Error

    0.08

    8
, http://www.100md.com
    0.01

    Total

    0.87

    19

    Tab.6 ANOVA for the observed(Tmax)of Roxithromycin tablets Source

    SS

    df

    MS

    F

    α=0.05

    Subject
, 百拇医药
    2.52

    9

    0.28

    77.52

    F(9,8)=3.40

    Formulation

    1.01

    1

    1.01

    279.03

    F(1,8)=5.32

    Period

, http://www.100md.com     0.00

    1

    0.00

    0.40

    F(1,8)=5.32

    Error

    0.03

    8

    0.00

    Total

    3.56

    19

    参考文献

    1 李家泰,江文德,陶萍等.临床药理学.北京:人民卫生出版社,1991.92~137,316~340

    2 魏树礼.药物动力学及题解.长沙:湖南科技出版社,1988.26~72

    3 毛安华,陈汉源.Roxitromycin的药代动力学.国外医药抗生素分册,1989.48~50

    收稿日期:1998-10-16, 百拇医药